Sources Stack Endpoints Pricing Docs vs RentCast
Get API Key → justin@proptechusa.ai 1-888-784-3881
POWERED BY PropTechUSA.ai 165+ CF WORKERS SUPABASE · KV EDGE <50MS GLOBALLY 600K+ ROWS · 9 SOURCES JUSTIN ERICKSON
Powered by PropTechUSA.ai — 165+ Workers in Production

Real estate data.
Institutional grade.
$49/mo.

9 data sources. Hundreds of datasets. Thousands of data points — rent trends, market velocity, vacancy rates, home price appreciation, mortgage rates, and AI-computed investor signals for every ZIP in America. One API call. Built on the 165+ Worker infrastructure powering PropTechUSA.ai.

Get API key → vs RentCast
33K+ZIP Codes
<50msEdge Latency
600K+Data Rows
9Data Sources
Live API — Try it now
LIVE
propdata-api-worker.sales-fd3.workers.dev/v1/market?zip=55101
// PropData API — Live demo // Fetching market data for 55101... █
165+ CF Workers KV Edge Cache Supabase Zillow ZORI Realtor.com Redfin HUD FMR Census ACS FHFA HPI FRED
Data Sources

Nine sources.
One response.
Zero compromise.

PropData aggregates 9 sources pulling from hundreds of government and commercial datasets — Zillow ZORI, Realtor.com, Redfin, HUD Fair Market Rents, Census ACS, FHFA HPI, Census Building Permits, FRED macro data, and a proprietary Estimate Engine. Over 600,000 rows of real market data ingested, normalized, and served in a single API call. Flat $49/mo. Zero per-call fees. Ever.

SOURCE 01

Fair Market Rents

U.S. Dept. of Housing & Urban Development

The government's official rent benchmark — the same data used to set Section 8 voucher amounts. Every county in America. Studio through 4-bedroom. Ground truth for affordability analysis.

STUDIO1BR2BR3BR4BRCOUNTY-LEVELFREE GOVT DATA
SOURCE 02

Observed Rent Index

Zillow Research

ZORI — Zillow's smoothed median asking rent for all homes and multifamily. The most cited rent trend dataset in real estate. ZIP, metro, state, and national with 10 years of history.

MEDIAN RENTYOYMOMZIP-LEVEL10 YR HISTORY
SOURCE 03

Market Metrics

Realtor.com Research

Monthly listing data: median prices, days on market, active inventory, new listings, price reductions, price per sqft. The pulse of the for-sale market at ZIP level.

DOMPRICE/SQFTINVENTORYPRICE CUTS
SOURCE 04

Market Tracker

Redfin

Sale-to-list ratio, % sold above list, days to pending, months of supply. The sharpest demand signal in public real estate data.

SALE/LIST RATIO% ABOVE LISTDAYS TO PENDING
SOURCE 05

ACS Demographics

US Census Bureau

Vacancy rates, renter %, median income, rent-to-income ratio. Affordability context nobody else includes at this price.

VACANCY RATERENTER %RENT BURDEN
SOURCE 06 — LIVE

FRED Macro Data

Federal Reserve Bank of St. Louis

Mortgage rates, shelter inflation, national vacancy rate, and housing starts. National economic context alongside local market data — no other API at this price point includes this.

MORTGAGE RATESSHELTER CPIHOUSING STARTS
SOURCE 07 — LIVE

House Price Index

FHFA — Federal Housing Finance Agency

Quarterly home price appreciation by state and metro. The definitive government measure of home value change — used by mortgage lenders, Fed economists, and institutional investors.

HPI APPRECIATIONSTATE + METROQUARTERLY
SOURCE 08 — LIVE

Building Permits

US Census Bureau BPS

Monthly new construction by unit type. The forward-looking supply signal — permits today become inventory in 12-18 months. Predicts rent pressure before it shows up in listing data.

SINGLE FAMILYMULTIFAMILYSUPPLY SIGNAL
SOURCE 09 — PROPRIETARY

PropData Estimate Engine

PropTechUSA.ai

Weighted rent estimate model built on owned data. ZORI (40%) + Census ACS (25%) + HUD FMR (20%) + Redfin cap rate (15%). Returns low/mid/high range with confidence score. No third-party dependency. No scraping. Ours.

RENT ESTIMATESBEDROOM-LEVELCONFIDENCE SCORE
Infrastructure

Built on Cloudflare.
Zero cold starts.
Global edge.

PropData runs on 9 dedicated Cloudflare Workers with a shared KV cache and Supabase backend. Every ingestion worker runs on its own cron — HUD weekly, ZORI and Realtor monthly. Data is cached at the edge and served in under 50ms anywhere in the world. This is the same infrastructure stack powering PropTechUSA.ai's 165+ production Workers.

🏗️

PropTechUSA.ai Infrastructure

PropData runs on 9 dedicated Workers inside PropTechUSA.ai's 165+ Worker production stack — the same infrastructure powering IntelligentHomeBuying, IntelligentLandlord, and LHBUSA. No monolith. Pure edge.

DEPLOYED + LIVE
⚡

KV Edge Cache

All market data cached at Cloudflare's edge. 7-day TTL. Sub-50ms reads globally.

031d6a9e — ACTIVE
🗄️

Supabase Canonical Store

15+ normalized tables. ZORI, Realtor, Redfin, HUD FMR, Census ACS, FHFA HPI — ZIP, state, and metro tiers. Indexed for fast queries.

rlfyavnhbngwbldebrid
🔐

API Key Auth + Rate Limiting

Tiered access. Free 50/hr, Pro 500/hr, Internal unlimited. Keys provisioned in KV instantly.

STRIPE INTEGRATED
PropData — Built on PropTechUSA.ai's 165+ Worker Stack
HUD APIWeekly cron
→
Zillow S3Monthly CSV
→
Realtor + RedfinMonthly TSV
→
Census + FHFAAnnual / Quarterly
→
FRED APIWeekly live
→
Ingestion WorkersNormalize + upsert
→
SupabaseCanonical store
→
KV CacheEdge — 7d TTL
→
propdata APIYour API key
→
Your App<50ms
What You Get

Merged data.
Computed signals.

Every /v1/market response includes a signals array — investor intelligence automatically computed from the merged dataset. Gross yield, market velocity, inventory pressure. Not just raw numbers. Answers.

Est. Gross Yield6.8%
Rent Growth YoY+4.1%
Market VelocityFast — 24 days DOM
Inventory PressureLow — down 14% YoY
Selling Above List101.8% sale/list
Vacancy RateVery Tight — 3.2%
Rent Burden28% of income
Endpoints
GET/v1/marketFull profile
?zip=55101 | ?state=MN | ?metro=Minneapolis
Rent + listing + signals — one response
GET/v1/rentRent only
HUD FMR by bedroom + ZORI median asking rent
Fastest endpoint for rent-focused apps
GET/v1/listingMarket data
DOM, inventory, price/sqft, price cuts, new listings
For-sale market pulse at ZIP level
GET/v1/healthStatus
Source status + last ingestion timestamps for all workers
GET/v1/estimateRent estimate — Pro
?zip=55101&beds=2 | ?state=MN&beds=3
Proprietary weighted model · low/mid/high range + confidence score
API REFERENCE — v1

Build anything.
Ship fast.

One endpoint. Nine data sources. 600,000+ data rows. Proprietary estimate engine. Zero per-call fees. Everything you need to build institutional-grade real estate tooling.

BASE URL
https://propdata-api-worker
.sales-fd3.workers.dev
CONTENT TYPE
application/json
🔑

AUTHENTICATION

Every request requires your API key. Pass it as a header (recommended) or query parameter.

HEADER (RECOMMENDED)
x-api-key: pd_free_YOUR_KEY
QUERY PARAMETER
?api_key=pd_free_YOUR_KEY
⚡

ENDPOINTS

GET /v1/market Full market profile — rent + market + affordability + signals 9 sources
PARAMETERS
zip5-digit ZIP code — e.g. 55101
state2-letter code — e.g. MN, TX, FL
metroMetro name — e.g. Minneapolis
monthsHistory depth, default 12
RESPONSE SHAPE
snapshot.rent → ZORI + HUD FMR
snapshot.market → Realtor + Redfin + FHFA
snapshot.affordability → Census ACS
snapshot.signals → 8 computed signals
macro → FRED (mortgage, CPI, starts)
history.rent_trend → 12mo ZORI
history.market_trend → 12mo Realtor
sources → 9 attribution labels
# by ZIP
GET /v1/market?zip=55101
# by state
GET /v1/market?state=MN
# by metro
GET /v1/market?metro=Minneapolis
# with history depth
GET /v1/market?state=TX&months=24
GET /v1/rent Rent-only — ZORI median asking rent + HUD FMR by bedroom lighter + faster
GET /v1/rent?zip=55101 # same params: zip | state | metro
GET /v1/estimate Proprietary rent estimate — weighted model, 4 sources Pro
GET /v1/estimate?zip=55101&beds=2 # 0=studio 1 2 3 4
GET /v1/estimate?state=MN&beds=3
Returns: monthly_low / monthly_mid / monthly_high + confidence_pct + market_trend
Model: ZORI 40% · Census ACS 25% · HUD FMR 20% · Redfin cap rate 15%
GET /v1/health System status + last ingestion timestamps for all workers no auth
GET /v1/health # no API key required
{'}'}

CODE EXAMPLES

const res = await fetch(
  'https://propdata-api-worker
   .sales-fd3.workers.dev/v1/market
   ?state=MN',
  { headers: {
    'x-api-key': 'YOUR_KEY'
  } }
);
const data = await res.json();
// data.snapshot.market.hpi_1yr_chg
// data.snapshot.signals[0].value
📊

RATE LIMITS

TIERREQ/HRPRICE
Free 50 $0/mo
Pro popular 500 $49/mo
Enterprise ∞ Custom

ERROR CODES

401 Invalid or missing API key
404 No data for this location
429 Rate limit exceeded — upgrade to Pro
500 Server error — contact support
READY TO BUILD?

Get your API key in 10 seconds.

Free tier. No credit card. No BS.

PropData vs The Market

The only API that gives you
data AND intelligence.

→ Read the full RentCast comparison + cost calculator

RentCast is a rent lookup. ATTOM and CoreLogic are enterprise contracts with sales calls and procurement. PropData is the only API at any price point that bundles live mortgage rates, vacancy data, investor signals, and a proprietary rent estimate engine — with a free tier, no credit card, no per-call fees. Ever.

Feature PropData RentCast ATTOM CoreLogic
Pricing Flat $49/mo Per call $500+/mo $1,000+/mo
At 10,000 calls/month $49 flat $100–500 $500+ $1,000+
Free tier — no credit card ✓ — — —
No per-call fees ever ✓ — — —
FRED macro data (mortgage rate, CPI, starts) ✓ Exclusive — — —
AI investor signals (computed) ✓ Exclusive — — —
Rent by bedroom (HUD FMR) ✓ ✓ — —
Median asking rent trend (ZORI) ✓ ✓ ✓ ✓
Days on market + inventory ✓ — ✓ ✓
Affordability data (Census ACS) ✓ — ✓ ✓
Home price appreciation (FHFA HPI) ✓ — ✓ ✓
Proprietary rent estimate engine ✓ ✓ ✓ ✓
ZIP + State + Metro coverage ✓ ✓ ✓ ✓
Pricing

Simple pricing.
No surprises.

Flat monthly access. Your API key is live the moment you sign up. No credit card required for the free tier. Cancel pro anytime. Enterprise gets direct founder access.

Starter
$0
free forever
  • 50 requests per hour
  • All endpoints
  • ZIP, state, metro queries
  • Investor signals included
  • No SLA guarantee
  • Community support
Pro
$49
per month
  • 500 requests per hour
  • All endpoints
  • 36 months of history
  • Investor signals
  • Email support
  • Cancel anytime
Enterprise
$—
custom
  • Unlimited requests
  • White-label available
  • Custom data sources
  • SLA + dedicated support
  • PropTechUSA.ai integration
  • Direct founder access
Contact us →
PROPRIETARY — SOURCE 09

A rent estimate engine
you actually own.

No Bright Data. No RentCast. No third-party black box. PropData's estimate engine is a proprietary weighted model built entirely on data we ingest and own. Four sources. One number. Full transparency.

40%
Zillow ZORI — actual market asking rents
25%
Census ACS — all occupied rentals, not just listed
20%
HUD FMR — government bedroom-level benchmark
15%
Redfin cap rate model — implied rent from sale prices
Get the estimate engine →
/v1/estimate?state=MN&beds=2
// Proprietary rent estimate — MN, 2BR
"estimate": {
"bedrooms": 2,
"monthly_low": 1288,
"monthly_mid": 1400,
"monthly_high": 1512,
"confidence_pct": 100,
"market_trend": "stable",
"yoy_rent_change": "+3.98%"
},
"sources_used": 4,
"model": "PropData Weighted Multi-Source"
USE CASES

What developers build
with PropData.

One API key. Nine sources. The data layer for the next generation of real estate tools.

🏠

Rental Pricing Tools

Call /v1/estimate with any ZIP + bedroom count to get low/mid/high rent ranges with confidence scores. Build the pricing feature your landlord software is missing.

ESTIMATE ENGINE + HUD FMR
📊

Investment Screeners

Pull gross yield, vacancy rate, rent-to-income ratio, and DOM for any market. Screen 50 states in 50 API calls. Find the markets worth underwriting before your competitors do.

ZORI + REDFIN + CENSUS + FHFA
🤖

AI Real Estate Agents

Feed PropData into your LLM context. Give your AI the same market intelligence a top broker uses — rent trends, DOM, affordability, macro rates — in one structured JSON call.

ALL 9 SOURCES + SIGNALS
📱

Market Report Apps

One call to /v1/market gives you a full market report — 12 months of history, signals, macro context. Build the neighborhood report card nobody else has.

REALTOR + REDFIN + FRED
💼

Mortgage & Affordability Tools

Combine live 30yr mortgage rates from FRED with median list prices, vacancy rates, and median income. Build the buy-vs-rent calculator that actually uses current data.

FRED + CENSUS + FHFA
🏗️

Supply Pipeline Signals

Housing starts surging? Permits up? Cross-reference with local vacancy and DOM to predict where rent growth is heading 12-18 months out. Data no other $49/mo API touches.

FRED + CENSUS PERMITS + FHFA
🗺️

Section 8 & Voucher Tools

HUD Fair Market Rents by bedroom for every county — the exact data used to set Section 8 voucher amounts. Build compliance tools, subsidy calculators, or affordable housing screeners.

HUD FMR — EVERY COUNTY
📰

Real Estate Newsletters

Automate your weekly market update. Hit PropData on a cron, get fresh rent trends, DOM, inventory changes, and macro context — format it and send. Institutional-grade data in every issue.

ZORI + REALTOR + FRED
⚡

Your idea here.

If it needs real estate market data, PropData can power it. Free key in 10 seconds. No credit card.

RentCast charges per call.
ATTOM charges enterprise.
PropData charges $49.

PropData is built by Justin Erickson / PropTechUSA.ai — the same infrastructure powering IntelligentHomeBuying.com, IntelligentLandlord.com, and Local Home Buyers USA. 165+ Cloudflare Workers in production.

Talk to us
PROPDATA DASHBOARD — LIVE
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API Key SHOW
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Base URL
propdata-api-worker.sales-fd3.workers.dev
Usage This Hour
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Quick Start
const res = await fetch(
 \`${API_BASE}/v1/market
  ?zip=55101\`,
 { headers: {
  'x-api-key': 'YOUR_KEY'
 } }
);
const data = await res.json();
Resources
API Docs → vs RentCast → RapidAPI Listing ↗ Support ✉
API Playground
Make live requests with your key. Results appear instantly.
LIVE
PATH 
// Enter a ZIP code or state above and hit Run →
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